Tonás (Spanish pronunciation: [toˈnas]) is a palo or type of flamenco songs. It belongs to the wider category of Cantes a palo seco, palos that are sung a cappella. Owing to this feature, they are considered by traditional flamencology to be the oldest surviving musical form of flamenco. The first known flamenco singer, , who lived in Jerez de la Frontera in the last third of the 18th century, was said to have excelled in this palo. Other cantes a palo seco, such as martinetes and debla, are sometimes classified under tonás, while at other times they are referred to as palos on their own.